High chair tray cover



FIG. 1 is a perspective view of my design installed on a typical high chair, which is shown in phantom lines and form no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a back elevation view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof. 

The ornamental design for a high chair tray cover, as shown and described. 